HomeMy WebLinkAboutPN_Brar_SP_201201_v1.pdfProject Narrative
Brar Short Plat 1
2200320.10
Brar Short Plat
8054 South 132nd Street
Renton, WA 98178
Project Narrative
November 6, 2020
Project No. 2200320.10
The Brar Short plat is a proposed residential development located at 8054 South 132nd Street within the
city of Renton, King County, Washington. The project is one parcel, TPN 214480-0460, which is
approximately 0.75 acre in size. The site is bordered to the north and west by private residential parcels,
to the south by South 132nd Street, and to the east by a parcel currently under construction to build
condominiums. Administrative site plan review is required for this project.
The property is zoned Single Family Residential Use (R-8) and surrounding parcels are also zoned as
residential, though the parcels to the east and north are zoned as R-14.
An existing three-bedroom house and outbuilding are onsite. The house is connected to an onsite septic
system that will be abandoned to the standards outlined by the King County Department of Health. The
remainder of the site is vacant. Per the geotechnical report provided by South Sound Geotechnical
Consulting (SSGC), the soils onsite do not appear to be contaminated.
As part of the onsite improvements, the existing house is to remain, while the outbuilding and septic
system will be removed. The parcel will be split into four lots and each lot will be serviced by sewer,
water, storm, and dry utilities. A private shared access will be constructed along the western property
line. The utilities will be installed within the right-of-way. The buildable areas on each lot range between
2,020 and 2,840 square feet, while the minimum proposed lot size is 4,767 square feet (Lot 2) and the
largest is 7,126 square feet. Other than Lot 2, all lots are greater than 5,000 square feet, meeting the lot
sizing required by City of Renton. The maximum impervious coverage within the R-8 zone is 50% of the
total lot and the maximum impervious coverage is 65%. A shared access tract and utility easements are
proposed along the west boundary for access and utilities. An 8-foot landscape buffer is proposed along
the west property boundary to screen the project from the neighboring development to the west. Runoff
on the site will discharge to the southwest at the access road, which matches the existing conditions.
Offsite improvements include an 8-foot sidewalk, new curb and gutter, a residential driveway approach,
and a sewer main extension along the length of the property frontage. The proposed utilities will require
pavement patches and/or overlay within the South 132nd Street frontage.
As mentioned above, a geotechnical report was prepared by SSGC, dated August 3, 2020. Soils consist
of silty sand within the first 1 to 3 feet and then change to very dense silty sand below that depth.
Shallow infiltration is possible with native soils, but it would be difficult due to site topography, and
stormwater runoff would move laterally. Native soils are not suitable as structural fill due to the amount
of silt and clay; however, with moisture conditioning, the soils may be used as structural fill. SSGC
recommended importing structural fill materials.
The estimated cost for the entire project is less than $200,000.
Project Narrative
Brar Short Plat 2
2200320.10
Site Statistics
Site Area: 0.75 acre, 32,599 SF
ROW Dedication: 1,300 SF
Proposed Impervious Surface Area: 13,470 SF
Existing Impervious (to remain-Lot 1): 2,460 SF
Minimum Lot Size: 4,767 SF (Lot 2)
Maximum Lot Size: 7,126 SF (Lot 1)
Landscape Buffer: 8-foot landscape buffer adjacent to the western property line
along access tract
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